Drafting instrument.



c. LISCHMIT.

DHAFTING INSTRUMENT.

APPLICATION FILED JUNE 24,19I5.

Patented Oct. 3, 1916.

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CLESTINE LEONTINE SCHIVIIT, OF MILWAUKEE, WISICYONSIN.

' DRAFTING INSTRUMENT.

Specification of Lettersrlatent.

Patented ct. 3, 1916.

Application led June 24, 1915. Serial No. 36,053.

To all 107mm t may concern Be it known that I, CnLEsrrNn LEONTINESCHurr, a citizen of the United States, and resident of Milwaukee, inthe county of Milwaukee and State of Wisconsin, have invented new anduseful Improvements in Drafting Instruments, of which the following is adescription, reference being had to the accompanying drawings, which area part of this specification.

This invention relates to improvements in drafting instruments moreparticularly adapted for use in the dressmaking art.

I/Vith the instruction of domestic art vin the school curriculum and thepassing of laws which make this instruction obligatory for extensionwork in'agricultural colleges and also in country agricultural schools,it has been found desirable to teach what is known as the straight linemethod, which method is so much used in the governmental schools in'France, Belgium, Switzerland and other European countries. This methodis generally given as class instruction similar.

to courses in mathematics and geometrical drawing but students notfamiliar with free hand drawing find difficulty in obtaining correctneck, arm and sleeve curves. Garments cut out too much around the neckor arm openings are spoiled and if too tight necessitate additionalfitting and cutting.

It is one of the objects of the present invention to overcome the beforementioned objectionable features and provide a drafting-instrument whichmay be conveniently used as a guide to mark on the material the correctcurves for cutting the neck and arm openings and the sleeve curves.

A further object of the invention is to provide a drafting instrumentwhich may be used for marking and measuring both the right and leftsides of the garment being made.

A further object of the invention is to provide a drafting instrumentwhich may be easily iexed or bent to conform to the :contour of theportions of the garment being designed and made, thus eliminating theuse of a tape.

A further object of the invention is to provide a drafting instrumentwhich while particularly adapted for school use in teachinginexperienced scholars the art of dressmaking is also adapted for use byothers who are skilled in the dressmaking art.

A further object .of the invention'is to provide a drafting instrumentwhich is of very simple construction and is easily used f and which maybe manufactured and sold at a minimum cost.

With the above and other objects in view the invention consists of theimproved draftlng instrument and its parts and combinations as set forthin the claims, and all equivalents thereof.

In the accompanying drawing in which the same reference charactersindicate the same parts in all of the views: Figure l is a side view ofthe improved drafting instrument; and Fig. 2 is a fragmentary portionthereof showing one end portion flexed or folded to show the measuringscale on opposite sides of the instrument.

Referring to the drawing the numeral 5 indicates a sheet of flexiblematerial of ap- `proximately triangular form. The back edge portion 6and the shoulder edge portion 7 of the material are formed in straightlines disposed at right angles with relation to each other and theopposite sides of the material adjacent the said edges have measuringscales 8 and 9 delineated thereon. The initial ends of the scales 8 and9 start at the corner l0 of the straight line 'so that whenl theinstrument is placed against the back of the person being measured withthe straight line 6 extending in a vertical direction and positionedcentrally on the back of the person, the scale of the upper straightedge 7 will serve to measure the distance from the center of the back tothe arm opening on one side of the garment. Now by swinging theinstrument over to the opposite side of the back and using the oppositeside of the instrument the distance between the other arm opening andthe center of the back andother measurements may be made. In measuringcurved portions of the garment the iiexibility of the material permitsthe scaled edge portions of the instrument being bent to the desiredshape. The remaining edge 10 of the flexible sheet of material of theinstrument is divided into three parts of which l1 is the neck openingcurve, 12 the arm opening curve and 13 the sleeve curve. The neck andarm curves are of proper shape to serve as marking edges to markapproximately a one quarter segment of each opening and are soproportioned as to serve for openings of different diameter. As theopenings increase in diameter a greater length of each curved edge isused to outline the quarter segment of each opening.

The curved edge portions of the instrument are more particularly adaptedfor use as templets or guides in penciling in the outline of theopenings upon paper or upon the cloth before cutting. The sleeve curveedge 13 is also used as a templet or guide for marking the shape of thesleeve upon paper or upon the cloth before cutting.

In use in measuring and cutting a paper pattern or the material for thegarment the material is placed upon a fiat surface and the instrument isthen placed upon the material and used as a tri-square and measuringscale and the curved edge portions provide accurate templets foroutlining the curved edge portions of the garment being made.

Vhile the drafting instrument has been described more particularly withrelation to school work in teaching domestic art it is to be understoodthat it is equally adaptable for use by experts in general dressmakingand the claims are to be so construed.

From the foregoing description it will be seen that `the draftinginstrument is of very simple construction and may be so l cheaplymanufactured and sold as to be placed within the reach of all of thepupils.

Ihat I claim as my invention is: I. A drafting instrument, comprising apiece of flat material having two straight edge portions meeting to forma right angle and also having approximately a hypotenuse edge portionwhich extends from the outer end of one straight edge portion to theother in a series of curves to form a templet for outlining the neck andarm openings and the curve of a sleeve of a dress, said sleeve curvepositioned intermediate of the other curved portions, portions of thematerial adjacent the straight edges having scales delineated thereon.

2. A drafting instrument, comprising a piece of iat flexible materialhaving two straight edge portions meeting to form a right angle and alsohaving approximately a hypotenuse edge portion which extends from theouter end of one straight edge portion to the other in a series ofcurves to form a templet for outlining the neck and arm openings and thecurve of a sleeve of a dress, said neck and arm opening curvespositioned adjacent the outer ends of the straight edge portions andforming approximately one quarter segment of each opening and beingshaped to serve for openings of different diameters, and the sleevecurve edge portion positioned intermediate the neck and arm curved edgeportions, the opposite sides of the material adjacent the straight edgeshaving measuring scales delineated thereon which start fromthe point ofjunction of the two straight edge portions.

In testimony whereof, I affix my signature. ELESTINE LEONTINE SCHMIT.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents. Washington, D. C.

